Daviesia chapmanii

Daviesia chapmanii is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a dense, compact, rounded shrub with sharply-ridged branches, densely crowded, sharply-pointed phyllodes, and pale yellow flowers with deep pink markings.

Description
Daviesia chapmanii is a dense, compact, rounded shrub that typically grows to 0.8 m high and 1.5 mm wide, its branches with many sharp, longitudinal ridges. Its leaves are reduced to densely-crowded, oblong to triangular, sharply-pointed phyllodes mostly 10–15 mm long and 2.5–4 mm wide. The flowers are arranged in groups of up to four in leaf axils on a peduncle 0.5–1.5 mm long, each flower on a pedicel 3.0–5.5 mm long with many narrowly oblong bracts about 0.5 mm long at the base. The sepals are 3.0–3.5 mm long and joined at the base, the upper lobes joined for most of their length and the lower three triangular and about 0.75 mm long. The flowers are pale yellow with deep pink markings, the standard broadly egg-shaped, 8.0–8.5 mm long and 6–9 mm wide. The wings are narrowly egg-shaped with the narrower end towards the base and 7–8 mm long and the keel about 7–8 mm long. Flowering mainly occurs in April and May and the fruit is an inflated, triangular pod 12–14 mm long.

Taxonomy and naming
Daviesia chapmanii was first formally described in 1995 by Michael Crisp in Australian Systematic Botany from specimens collected near the Hill River bridge on the Brand Highway in 1979. The specific epithet (chapmanii) honours the plant collector, Charles Chapman (1904–1988).

Distribution and habitat
This species of pea grows in kwongan, mostly restricted to the area between Badgingarra, Eneabba and Carnamah in the Avon Wheatbelt and Geraldton Sandplains biogeographic regions of south-western Western Australia.

Conservation status
Daviesia chapmanii is listed as "not threatened" by the Department of Biodiversity, Conservation and Attractions.